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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Swanton Village Water

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND60ND
2016ND50ND
2017ND50ND
2018ND50ND
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-0714V00098ND
2014-01-0714V00097ND
2014-04-0714V00164ND
2014-07-0715V00002ND
2014-10-0615V00115ND
2015-01-0515V00140ND
2015-01-0515V00141ND
2015-04-0615V00189ND
2015-07-0616V00002ND
2015-10-0116V00058ND
2015-10-2816V00062ND
2016-01-0516V00077ND
2016-01-0516V00078ND
2016-04-0516V00111ND
2016-07-1217V00002ND
2016-10-0417V00047ND
2017-01-0317V00069ND
2017-01-0317V00071ND
2017-04-0417V00123ND
2017-07-0618V00001ND
2017-10-1618V00095ND
2018-01-0218V00119ND
2018-01-0218V00120ND
2018-04-0218V00158ND
2018-07-0219V00001ND
2018-10-0919V00063ND
2019-01-0719V00082ND
2019-01-0719V00081ND
2019-04-0119V00107ND
2019-07-0120V00001ND
2019-10-0120V00049ND